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Jayanthi, Madhavi; Dimino, Joseph; Gersten, Russell; Taylor, Mary Jo; Haymond, Kelly; Smolkowski, Keith; Newman-Gonchar, Rebecca – Journal of Research on Educational Effectiveness, 2018
The purpose of this replication study was to examine the impact of the Teacher Study Group (TSG) professional development in vocabulary on first-grade teachers' knowledge of vocabulary instruction and observed teaching practice, and on students' vocabulary knowledge. Sixty-two schools from 16 districts in four states were randomly assigned to…
Descriptors: Vocabulary Development, Teaching Methods, Faculty Development, Grade 1
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Hitchcock, John H.; Kurki, Anja; Wilkins, Chuck; Dimino, Joseph; Gersten, Russell – Practical Assessment, Research & Evaluation, 2009
When attempting to determine if an intervention has a causal impact, the "gold standard" of program evaluation is the randomized controlled trial (RCT). In education studies random assignment is rarely feasible at the student level, making RCTs harder to conduct. School-level assignment is more common but this often requires considerable resources…
Descriptors: Intervention, Reading Instruction, Program Effectiveness, Reading Programs